Bitcoin has the highest overall level of decentralization among all cryptocurrencies.
Unfortunately this's also included as one of the weaknesses of bitcoin. Because of the nature of decentralization this's what has made bitcoin vulnerable to being misused its existence, both by miners such as in China and acts of manipulation carried out by large whales (cunning speculators).
very interesting when we hear that academics from Princeton University and academics from the University of Florida have concluded that China has the potential to threaten stability, internet infrastructure, security and bitcoin development.
in the world of mining, China dominates using ASIC vendors. China controls mining hashrate, so they affect the bitcoin protocol.